Raymond Burr Perry Mason Actor Barbara Hale Della Street Actor William Hopper Paul Drake Actor Ray Collins Lt. Arthur Tragg Actor Victor Buono Nathon Fallon Guest Star Charlene Holt Helen Cadmus Guest Star Robert Colbert Asst. District Attorney F.A. Snell Guest Star Lurene Tuttle Josephine Kempton Guest Star Gavin MacLeod Mortimer Hershey Guest Star Bartlett Robinson Sydney Hardwick Guest Star Harvey Stephens Benjamin Addicks Guest Star Bob Foulk Deputy Sergeant Guest Star Jim Boles Estate Guard Guest Star Tommy Farrell Jefferson Guest Star Janos Prohaska Gorilla Guest Star Gail Patrick Jackson Executive Producer Ben Brady Producer Jesse Hibbs Director Erle Stanley Gardner Writer Jackson Gillis Writer